Rebuilding a 130-Country Platform While the Lights Stayed On
In early 2021 I inherited a monolith. 220 projects stitched together, 30,000 sequential tests, builds that took seven hours when they worked and failed roughly half the time. This was the codebase running Fulfilled-by-Maersk, warehouse management, order routing, last-mile delivery, across 130 countries. Revenue-critical. Always on. 99.9% availability